1Test::Tolerant(3) User Contributed Perl Documentation Test::Tolerant(3)
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6 Test::Tolerant - test routines for testing numbers against tolerances
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9 version 1.710
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12 use Test::More;
13 use Test::Tolerant;
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15 my $total = rand(6) + rand(6) + rand(6);
16 is_tol(10, [ qw( 3 to 18 ) ], "got an acceptable result from random dice");
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18 done_testing;
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21 This library should run on perls released even a long time ago. It
22 should work on any version of perl released in the last five years.
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24 Although it may work on older versions of perl, no guarantee is made
25 that the minimum required version will not be increased. The version
26 may be increased for any reason, and there is no promise that patches
27 will be accepted to lower the minimum required perl.
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30 is_tol
31 is_tol($have, $want_spec, $comment);
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33 "is_tol" is the only routine provided by Test::Tolerant, and is
34 exported by default. It beahves like "is" from Test::More, asserting
35 that two values must be equal, but it will always use numeric equality,
36 and the second argument is not always used as the right hand side of
37 comparison directly, but it used to produce a Number::Tolerant to
38 compare to.
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40 $have_spec can be:
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42 * a Number::Tolerant object
43 * an arrayref of args to Number::Tolerant->new
44 * a string to be passed to Number::Tolerant->from_string
45 * a literal number falls under this group
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47 If the value is outside of spec, you'll get a diagnostic message
48 something like this:
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50 given value is outside acceptable tolerances
51 have: 3
52 want: 5 < x
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55 Ricardo Signes <cpan@semiotic.systems>
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58 This software is copyright (c) 2004 by Ricardo Signes.
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60 This is free software; you can redistribute it and/or modify it under
61 the same terms as the Perl 5 programming language system itself.
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65perl v5.36.0 2023-01-06 Test::Tolerant(3)